Aptitude and Reasoning Questions

Q:

The average age of 6 members of a family is 20 years. If the age of the servant is included, then the average age increase by 25%. What is the age (in years) of the servant?

A) 30 B) 35
C) 50 D) 55
 
Answer & Explanation Answer: D) 55

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

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Q:

In a class of 60 students there are 30 girls. The average weight of these girls is 58 Kg and average weight of the full class is 63 kgs. What is the average weight of the boys of the class?

A) 67 B) 66
C) 68 D) 65
 
Answer & Explanation Answer: C) 68

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Filed Under: Average
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

In each of the following questions two equations I and II are given. Solve both the equations and give answer:
I. x2+2x-195=0II. y2+30y+225=0

A) x = y or relation can’t be established between x and y B) x > y
C)  x < y D)  x ≥ y
 
Answer & Explanation Answer: D)  x ≥ y

Explanation:

 I. x2 + 2x - 195 = 0 = (x+15) (x-13) => x = -15, 13

II. y2 + 30y + 225 = 0 = (y+15) (y+15) => y = -15, -15

So x ≥ y

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Filed Under: Simplification

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Q:

ax + 5y = 8 has slope of -4/3. What is the value of a?

A) 20/3 B) 3/20
C) -20/3 D) -3/20
 
Answer & Explanation Answer: A) 20/3

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

If '­' means 'x' , 'x' means '+' , '+' means '÷' and '÷' means '­' , then what will be the value of 40 x 12 + 3 ­ 6 ÷ 60 = ?

A) 4 B) 7
C) 16 D) 44
 
Answer & Explanation Answer: A) 4

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

3/5 of my current age is the same as 5/6 of that of one of my cousin. My age ten ago will be his age four years hence. My current age is ___ years.

A) 60 B) 55
C) 45 D) 50
 
Answer & Explanation Answer: D) 50

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

A) 60 B) 55
C) 50 D) 65
 
Answer & Explanation Answer: B) 55

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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Q:

Find the L.C.M of 4/5, 2/3 and 5/7.

A) 25 B) 20
C) 40 D) 30
 
Answer & Explanation Answer: B) 20

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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